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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Database driver test case.
  19   *
  20   * @package    core
  21   * @category   phpunit
  22   * @copyright  2012 Petr Skoda {@link http://skodak.org}
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  
  27  /**
  28   * Special test case for testing of DML drivers and DDL layer.
  29   *
  30   * Note: Use only 'test_table*' names when creating new tables.
  31   *
  32   * For DML/DDL developers: you can add following settings to config.php if you want to test different driver than the main one,
  33   *                         the reason is to allow testing of incomplete drivers that do not allow full PHPUnit environment
  34   *                         initialisation (the database can be empty).
  35   * $CFG->phpunit_extra_drivers = array(
  36   *      1=>array('dbtype'=>'mysqli', 'dbhost'=>'localhost', 'dbname'=>'moodle', 'dbuser'=>'root', 'dbpass'=>'', 'prefix'=>'phpu2_'),
  37   *      2=>array('dbtype'=>'pgsql', 'dbhost'=>'localhost', 'dbname'=>'moodle', 'dbuser'=>'postgres', 'dbpass'=>'', 'prefix'=>'phpu2_'),
  38   *      3=>array('dbtype'=>'sqlsrv', 'dbhost'=>'127.0.0.1', 'dbname'=>'moodle', 'dbuser'=>'sa', 'dbpass'=>'', 'prefix'=>'phpu2_'),
  39   *      4=>array('dbtype'=>'oci', 'dbhost'=>'127.0.0.1', 'dbname'=>'XE', 'dbuser'=>'sa', 'dbpass'=>'', 'prefix'=>'t_'),
  40   * );
  41   * define('PHPUNIT_TEST_DRIVER')=1; //number is index in the previous array
  42   *
  43   * @package    core
  44   * @category   phpunit
  45   * @copyright  2012 Petr Skoda {@link http://skodak.org}
  46   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  47   */
  48  abstract class database_driver_testcase extends PHPUnit_Framework_TestCase {
  49      /** @var moodle_database connection to extra database */
  50      private static $extradb = null;
  51  
  52      /** @var moodle_database used in these tests*/
  53      protected $tdb;
  54  
  55      /**
  56       * Constructs a test case with the given name.
  57       *
  58       * @param string $name
  59       * @param array  $data
  60       * @param string $dataName
  61       */
  62      final public function __construct($name = null, array $data = array(), $dataName = '') {
  63          parent::__construct($name, $data, $dataName);
  64  
  65          $this->setBackupGlobals(false);
  66          $this->setBackupStaticAttributes(false);
  67          $this->setRunTestInSeparateProcess(false);
  68      }
  69  
  70      public static function setUpBeforeClass() {
  71          global $CFG;
  72          parent::setUpBeforeClass();
  73  
  74          if (!defined('PHPUNIT_TEST_DRIVER')) {
  75              // use normal $DB
  76              return;
  77          }
  78  
  79          if (!isset($CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER])) {
  80              throw new exception('Can not find driver configuration options with index: '.PHPUNIT_TEST_DRIVER);
  81          }
  82  
  83          $dblibrary = empty($CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dblibrary']) ? 'native' : $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dblibrary'];
  84          $dbtype = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dbtype'];
  85          $dbhost = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dbhost'];
  86          $dbname = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dbname'];
  87          $dbuser = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dbuser'];
  88          $dbpass = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dbpass'];
  89          $prefix = $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['prefix'];
  90          $dboptions = empty($CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dboptions']) ? array() : $CFG->phpunit_extra_drivers[PHPUNIT_TEST_DRIVER]['dboptions'];
  91  
  92          $classname = "{$dbtype}_{$dblibrary}_moodle_database";
  93          require_once("$CFG->libdir/dml/$classname.php");
  94          $d = new $classname();
  95          if (!$d->driver_installed()) {
  96              throw new exception('Database driver for '.$classname.' is not installed');
  97          }
  98  
  99          $d->connect($dbhost, $dbuser, $dbpass, $dbname, $prefix, $dboptions);
 100  
 101          self::$extradb = $d;
 102      }
 103  
 104      protected function setUp() {
 105          global $DB;
 106          parent::setUp();
 107  
 108          if (self::$extradb) {
 109              $this->tdb = self::$extradb;
 110          } else {
 111              $this->tdb = $DB;
 112          }
 113      }
 114  
 115      protected function tearDown() {
 116          // delete all test tables
 117          $dbman = $this->tdb->get_manager();
 118          $tables = $this->tdb->get_tables(false);
 119          foreach($tables as $tablename) {
 120              if (strpos($tablename, 'test_table') === 0) {
 121                  $table = new xmldb_table($tablename);
 122                  $dbman->drop_table($table);
 123              }
 124          }
 125          parent::tearDown();
 126      }
 127  
 128      public static function tearDownAfterClass() {
 129          if (self::$extradb) {
 130              self::$extradb->dispose();
 131              self::$extradb = null;
 132          }
 133          phpunit_util::reset_all_data(null);
 134          parent::tearDownAfterClass();
 135      }
 136  
 137      /**
 138       * Runs the bare test sequence.
 139       * @return void
 140       */
 141      public function runBare() {
 142          try {
 143              parent::runBare();
 144  
 145          } catch (Exception $e) {
 146              if ($this->tdb->is_transaction_started()) {
 147                  $this->tdb->force_transaction_rollback();
 148              }
 149              $this->tearDown();
 150              throw $e;
 151          }
 152      }
 153  
 154      /**
 155       * Return debugging messages from the current test.
 156       * @return array with instances having 'message', 'level' and 'stacktrace' property.
 157       */
 158      public function getDebuggingMessages() {
 159          return phpunit_util::get_debugging_messages();
 160      }
 161  
 162      /**
 163       * Clear all previous debugging messages in current test.
 164       */
 165      public function resetDebugging() {
 166          phpunit_util::reset_debugging();
 167      }
 168  
 169      /**
 170       * Assert that exactly debugging was just called once.
 171       *
 172       * Discards the debugging message if successful.
 173       *
 174       * @param null|string $debugmessage null means any
 175       * @param null|string $debuglevel null means any
 176       * @param string $message
 177       */
 178      public function assertDebuggingCalled($debugmessage = null, $debuglevel = null, $message = '') {
 179          $debugging = phpunit_util::get_debugging_messages();
 180          $count = count($debugging);
 181  
 182          if ($count == 0) {
 183              if ($message === '') {
 184                  $message = 'Expectation failed, debugging() not triggered.';
 185              }
 186              $this->fail($message);
 187          }
 188          if ($count > 1) {
 189              if ($message === '') {
 190                  $message = 'Expectation failed, debugging() triggered '.$count.' times.';
 191              }
 192              $this->fail($message);
 193          }
 194          $this->assertEquals(1, $count);
 195  
 196          $debug = reset($debugging);
 197          if ($debugmessage !== null) {
 198              $this->assertSame($debugmessage, $debug->message, $message);
 199          }
 200          if ($debuglevel !== null) {
 201              $this->assertSame($debuglevel, $debug->level, $message);
 202          }
 203  
 204          phpunit_util::reset_debugging();
 205      }
 206  
 207      /**
 208       * Call when no debugging() messages expected.
 209       * @param string $message
 210       */
 211      public function assertDebuggingNotCalled($message = '') {
 212          $debugging = phpunit_util::get_debugging_messages();
 213          $count = count($debugging);
 214  
 215          if ($message === '') {
 216              $message = 'Expectation failed, debugging() was triggered.';
 217          }
 218          $this->assertEquals(0, $count, $message);
 219      }
 220  }